Data as of Nov 15, 2026
63.236.51.0/24
No anonymizer space · no proxy exits in 30 daysMblox Inc. · space held by CenturyLink Communications, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | RPKI |
|---|---|---|---|---|
| 63.224.0.0/12 | AS209 | Residential | 1,253 77 always on |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 63.236.0.0/14 | 262,144 | CENTURYLINK-LEGACY-QWEST-INET-9 | CenturyLink Communications, LLC (CCL-534) · US | Direct Allocation | Nov 19, 1999 | abuse@ |
| └ 63.236.51.0/24 | 256 | 63-236-51-0-24 | Mblox Inc. (MBLOX-1) · US | Reassigned | May 2, 2019 | — |
Network & registry
IPv4 market
Holder
- Organization
- CenturyLink Communications, LLC
- Handle
- CCL-534
- Range
- 63.
236. 0. 0/ 14 - Registration type
- Direct Allocation
- Record created
- Nov 19, 1999
Origin network
AS54450
US
- Name
- Mblox Inc.
- Type
- Business
- Registered
- Feb 23, 2012
- Domain
- mblox.com
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Mar 2012 · 15 yr
- Origin networks
- 2
- Last change of origin
- Mar 2012
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
- Range
- 63.
236. 51. 0/ 24 - Netname
- 63-236-51-0-24
- Registrant
- Mblox Inc.
- Organization
- Mblox Inc. (MBLOX-1)
- Org address
- 3500 Lenox Road NE, Atlanta, GA, 30326
- Org country
- US
- Type
- Reassigned
- Handle
- NET-63-236-51-0-1
- Parent
- NET-63-236-0-0-1
- Created
- May 2, 2019
- RIR
- ARIN
- Country
- US
- Delegated
- Nov 19, 1999
- Status
- assigned
Report abuse
Abuse contact
- abuse@
aup. lumen. com - Name
- Centurylink Abuse Desk
- Phone
- +1-877-886-6515
- Handle
- CAD54-ARIN